Features- Seamless Transition Between Input Power Sources:
Li-Ion Battery, USB and 5V Wall Adapter
- Low Loss (50mΩ) Ideal Diode Path from BAT to OUT
- Programmable Charge Current Detection (CHRG)
- Load Dependent Charging Guarantees USB Input Current Compliance
- Analog Gas Gauge Function
- Charges Single Cell Li-Ion Batteries Directly from USB Port
- Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate Without Risk of Overheating*
- Selectable 100% or 20% Current Limit (e.g., 500mA/100mA)
- Termination Timer Adapts to Actual Charge Current
- Preset 4.2V Charge Voltage with 0.8% Accuracy (4.1V for LTC4066-1)
- NTC Thermistor Input for Temperature Qualified Charging
- Thin Profile (0.75mm) 24-Lead 4mm x 4mm QFN Package
- Ultrathin Profile (0.55mm) 24-Lead 4mm x 4mm UTQFN Package (LTC4066 Only)
Typical Application
 | Applications- Portable USB Devices
- GPS, Cameras, Broadband Wireless Modems
- Mulitple Input Chargers
Packaging
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